# schoolbag = ['语文书','数学书','笔盒','练习册']
# schoolbag1 = schoolbag
# print(schoolbag,schoolbag1)
# schoolbag[0] = '英语书'
# print(schoolbag,schoolbag1)



# schoolbag = ['语文书','数学书','英语书','漫画书']
# length = len(schoolbag)
# i = 0
# while i < length:
#     print(schoolbag[i])
#     i += 1
#
#
# schoolbag = ['语文书','数学书','英语书','漫画书']
# for item in schoolbag:
#     print(item)



# schoolbag = ['语文书','数学书','英语书','漫画书']
# print(schoolbag)
# workbook = ['语文练习册','数学练习册']
# penbox = ['铅笔','油笔','橡皮']
# schoolbag.extend(workbook)
# print(schoolbag)
# schoolbag.append(penbox)
# print(schoolbag)


# schoolbag = ['语文书','数学书','英语书','漫画书']
# print(schoolbag)
# schoolbag.pop(2)
# print(schoolbag)
# schoolbag.remove('漫画书')
# print(schoolbag)